Home / 12,618.24-17,287.08-12,145.32

Finding the Fourth Proportional to 12,618.24, 17,287.08 and 12,145.32

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Solution

The fourth proportional to 12,618.24, 17,287.08 and 12,145.32 is: 16,639.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,618.24 : 17,287.08 = 12,145.32 : x
  2. Step 2: Convert to fraction form
    12,618.24/17,287.08 = 12,145.32/x
  3. Step 3: Cross multiply
    12,618.24x = 17,287.08 × 12,145.32
  4. Step 4: Simplify right side
    12,618.24x = 209,957,118.47
  5. Step 5: Solve for x
    x = 209,957,118.47/12,618.24
  6. Step 6: Final answer
    x = 16,639.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.